Pizzlies and Grolars—Climate-Mediated Combinations? –by Jinny Batterson
During the summer of 2017, I vacationed for two weeks in parts of Alaska. One of the naturalists who guided a bus tour I took in Denali National Park in central Alaska mentioned some new “hybrid” bears that are starting to show up in the far north of Alaska and Canada. As Arctic polar sea ice shrinks, the traditional ice floe habitat of polar bears is shrinking along with it. As temperatures in interior Alaska warm, some grizzlies are moving further north. One result is that the two sub-species of bears, who rarely encountered each other in the past, now have more overlap in their ranges. Sometimes they fight; at other times they interact in different ways. Offspring of polar-grizzly matings are called pizzly or grolar bears. Pizzlies and grolars typically have the coloring of polar bears, with the large head that is more characteristic of a grizzly. A picture of a pizzly that had been killed by a hunter was posted on a National Geographic site (https://news.nationalgeographic.com/news/2010/12/photogalleries/101215-pizzly-grolar-bear-polar-grizzly-hybrids-nature-arctic-global-warming-pictures/) in 2010. Only a few of the hybrid bears have been encountered so far, but biologists expect that more matings will likely occur as climate change accelerates. Perhaps, as our planet continues to warm, there may someday be pizzlies and grolars as far south as Denali park.
My direct knowledge of Alaska’s longer-term weather is nil. However, a friend in Fairbanks who has spent most of his adult life in the now-less-frozen north, told me that the previous year’s winter was exceptionally mild—with overall temperatures about 6 degrees Fahrenheit about average. His back yard developed a lawn-chair sized sinkhole when part of its permafrost melted. Statistics from the National Oceanic and Atmospheric Administration (NOAA), a U.S. governmental weather agency, bear out that the entire year 2016 was of record-breaking warmth in all reporting stations of our northernmost state (https://www.climate.gov/news-features/features/2016-shatters-record-alaskas-warmest-year). Climate change in Alaska has been more rapid than in the lower forty-eight states.
About three years ago, I participated in the People’s Climate March in New York City. For me, part of the event’s inspiration came from seeing so many people of so many different backgrounds engaged in demonstrating for the good of our planet. Even more inspiring to me was the interfaith service held the evening after the march at the Cathedral of Saint John the Divine. Many of the speakers at the service came from areas already experiencing disruptions due to climate change— more intense downpours, longer droughts, stronger typhoons and hurricanes, sea level rise.
The indigenous elders who participated in the service were alarmed and dismayed at the damage we are doing to our planet (the environment that sustains the lives of all species, including humans), but they were not without hope. At the conclusion of an interfaith conference that ran concurrently with the march and its preparations, they issued a call to action:
“Know that you yourself are essential to this World. Each of us is put here in this time and this place to personally decide the future of humankind. We must sacrifice and move beyond our own comforts and pleasures. We must stop the damaging activities and begin working on restoring the natural environment for the future of All Life.”
The year 2017 has had its share of weather extremes in U.S. states and territories: inhabitants of Houston, Florida, Puerto Rico, the Virgin Islands, and northern California have now experienced firsthand some of the effects of human-induced climate change. We will all need to adapt. The interbreeding option available to polar bears and grizzlies is not in our future—we have become too differentiated from other animals for that. What can be in our future, if we choose, is increasing cooperation across cultures and religions to reduce our damage to our Earth, and to start to help heal her and ourselves.